Sand-blast machine.



No. 880,337. PATENTED FEB. 25, 1908.

s. SLOOUM, DEGD. A. B. SLOGUM. EXEGUTRIX.

SAND BLAST MACHINE.

APPLICATION FILED JUNE 17, 1907.

3 SHEETS-SHEET l.

MTNEEEE 5- INVENTOR- an 6 c BY Jim Maw? AT TY.

No. 880,837. PATENTED FEB. 25, 1908.

G. S. SLOGUM, DEGD.

A. B. SLOGUM. EXEGUTRIX. SAND BLAST MACHINE.

APPLI '1 ON IL 17,1907.

0A 1 P ED JUNE 3 SHEBTSSHEET 2.

MTNESSES 'INV'EAL'TDH No. 880,337. PATENTED FEB. 25, 1908.

G. s'. SLOGUM, DEOD.

A. B. SLOOUM. EXBGUTRIX.

SAND BLAST MACHINE.

APPLICATION FILED JUNE 17, 15107 3 SHEETS-SHEET 3.

\AGTNEEEEE INXQENT UR shown in the drawings.

UNITEU PATENT oEFIcE.

GEoRGE scoTT SLOCUM, OFIN'EWPORTQRHUDE ISLAND; ANNIE B. SLOCUM EXECUTRIX or I SAID GEORGE soor'r SLOGUM, DECEASED.

SAND-BLAST MACHINE.

Specification of 1.9mm Patent.

-Applioati0n filed June 1'7 1907. Serial No. 379519- To all whom t'tmay concern:

Be. it known that I, GEORGE Soo'r'r SL0- CUM, a citizen of the United States of Amer- I ica, anda resident of the city and county of Newport, in the State of Rhode Island, have invented certain-new'and useful Improve- .ments in Sand-Blast Machines, of which the following is, a specification] My invention is especially applicable to that class of sand-blast machines shown in Letters Patent of the United States, No. 636,460, issued to me November 7, 1899, but it is also designed and adapted for use insandblast machines in which sand or other abradant is carried by a jet of air or like mobile vehicle'through a conduit against the surface of an article held in the plane of action of:such sand-carrying jet.

The purpose of my invention is to combine operatively in such machine means for holding a plurality of articles to be cut or ornamented, and for conveying the same collectively across the path of the sand-carrying jet; means for preventing the escape into the workroom of dust and particles of the abradant; means for dissipating the force of the jet after it has acted upon the article and prior to its exhaust to the outer air, and thereby to release particles of the abradantwhich may have been carried along with it and allow such particles by gravity to be returnedto the sand-chamber for reuse.

To these ends my invention consists in the novel construction, combination and arrangement of parts hereinafter described and In the accompanying drawings, in which 1 have shown only those arts of the machine necessary to illustrate t e relation of my invention thereto: Figure 1 is a side elevation showing the body or sand-chamber of my machine partly in section, a'sectional view of the feed-table, feed-rolls and conveyer, and the exhaust chamber andits connec tions with the sand-chamber. Fig. 2 is a rear elevation of the same parts, the sectional portion of the view'-being taken at right angles to that'shown in Fig. 1-. Fig. 3 is a plan View of the conveyer, or platen carrying the articles to be operated upon. Fig. 4 is a plan ofv the cover of the sand chamber,

conveyer, etc. Fig. 5 is a section taken on line 'y.y' of Fig. 4. Fig. 6 is a section takenon line wa; of Fig. 4'.

A, represents the sand chamber mounted ters Patent abovereferred to.

in the usual way u on standards A, and connected in the usua manner through the ductipe A with the valve chamber, not shown. aid chamber, A, is provided with an airtight cover A in turn provided with an opening A, arranged, asshown, immediately over the jet-conduit, A which may be constructed and arranged as shown in my Let- Secured to the under side of said cover, and surroundin said opening and conduit, is a cone-shap deflector A, adapted to turn the air current, after its impin ement against the articles to be cut, downwar as indicated by the arrows.

Upon one side of the sand chamber, A, near the top thereof, is mounted a feedtable, B, and feed-rolls, B B between which is arranged to travel the conveyer, O, which is provided with a plurality of perforations adapted articles, such as buttons, to be 0 erated upon, and to convey the same, as t e conveyer is fed along by the feed-mechanism, across the path of the blast-jet and the opening A". Said conveyer travels in a channel orguideway, 0, extending across said table and the top of the cover, A over the o ening A Packings, e, and e arrange above and below said conveyerin said channel or vguideway are adapted and designed to render said sand chamber airtight both around the opening A and the conveyer C, and to be, bysuitable-means, as hereinafter described, held in yieldingcontact with said conveyer at all times in its to receive and hold the A convenient device for insuring such yielding contact the plate D covered on its under surface and, its four edges with suitable (packing material, 6, and arranged to fill sa" guide- Way above and for a suitable distance on.

either side of the opening A with an air.- tight fit, and to be held down yieldingly against said conveyer, in its passage through said guideway, by the straps d, and nuts d acting against the interposed helical springs d and to force the conveyer downward with an air-tight fit upon the packings 6 located on the top of the cover A? at opposite sides of .the opening A, and thereby prevent the es-' cape of dust or abradant around said 0 ening or said conveyer.- It is obvious that y this device I am enabled to insure at all times an airetight acking on all sides of the conveyer and o' the opening A", and that by reason ofithe yielding ca acity of the packing plate D the capacity 0 the machine .is not restricted to any specific thickness of article to be operated upon. Arranged immediately above the sand chamber, A, and con- T nected therewith by the duct pi es E E is I 2, while the sides of the floor are inwardly,

downwardly inclined, so that particles of sand or other abradant carried into the exhaust-c'hamber by the air current will by gravity be carried down into the pipes, E E and fall into the lower portion 0 the sand chamber, A, whence it can again be taken by the air and induced currents and forced through the conduit, A against the articles to be cut or ornamented. The buttons or other articles operated upon are discharged upon an inclined screen, S, and thereby separated from the sandwhich may cling to them. The rolls B B are adjustably mounted, and are actuated to feed the conveyer through the guideway and across the plane of action of the jet by suitable feed mechanism. I have shown in the drawings a driving pulley P, and the pinion-gear arranged for this purpose.

I claim as my invention, and desire to secure by Letters Patent: 4

1. In a machine. in which an abradant is carried by a jet of air or like mobile vehicle through a conduit against the surface of an article to be sand-blasted, the combination with an abradant-containing chamber provided with a cover having an o enlng' through its top and a guideway locate upon the top of said cover and extending across said cover top and said opening, at opposlte sides of said opening and in line therew1th,.of a conveyer arranged in said guideway for reciprocating movement over said opening and a apted to carry articles to be sand-blasted across the said 0 ening and the plane of action of the abra ant-carrying jet, and a jet conduit located within said abradant-containing chamber and terminating within said chamber near said opening.

2. In a sand-blast machlne the combina- 'tion of a sand chamber, provided with a cover having an opening through its top and a guide-way located upon the top of said cover -bers. v

5. In a sand-blast machine the combinaand extending across said cover top and said opening at opposite sides of and in linewith said opening, a conduit for an abradant carrymg jet located within said sand-chamber and terminating within'said sand-chamber near said opening, a perforated conveyer arranged in said guide-way for reciprocating move- -1nent therein across said opening and adapted to hold a plurality of articles to be sandblasted and to be fed over said 0 'ening and across the plane of'action of said carrying jet, and means for actuating said conveyer.

3. In a sand-blast machine the combina-' abradant tion of an abradant containing chamber provided with a cover having a centrally located opening through its top'and a guideway ex tending across the to of said cover and opening, in line withsai opening, a jet conduit located within said chamber and terminating therein near said opening, a conveyer arrangedlfor both reciprocating and vertical movements in said guideway and adapted to be fed along in said guideway to carry. across said opening and across the plane of action of said jet articles to be sand-blasted, packings arranged on said cover below said guideway at opposite sides of said central opening, and a packing-plate arranged and adapted for vertical movement in said guideway above said conveyer to thereby hold said conveyer in (yielding contact with said packing plate an said lower packings with substantially an air-tight fit.

4. In a sand-blast'machine the combinaer interior of sai chamber, and a'conduit or an abradant carrying jet located within said chamber, and ternnnating within said deflector, with an exhaust chamber connect ed wlth-the outer air and ducts connecting said exhaust and abradant containing chamtion with a sand chamber, of a cover provided with an opening through its top, a

guideway located on the top of said cover and extending across said top, and o ening in line with said opening, a packing-p ate arranged for yielding vertical movement in said guideway, andmeans for causing such yielding movement of said packing-plate.

GEORGE SCOTT SLOCUM. Witnesses HENRY MAnsH,Jr.,

1 FRANCELLO G. JILLSON. 

